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• W2008231882 startingPage "1383" @default.
• W2008231882 abstract "The bis(bidentate) phosphine cis,trans,cis-1,2,3,4-tetrakis(diphenylphosphino)cyclobutane (dppcb) has been regioselectively oxidized leading to novel, hemilabile ligands. [Co2Cl4(dppcb)] (1a) is transformed viacobalt(II) mediated dioxygen activation into [Co2Cl4(2,3-trans-dppcbO2)] (2a) in excellent yield, where 2,3-trans-dppcbO2 is cis,trans,cis-2,3-bis(diphenylphosphinoyl)-1,4-bis(diphenylphosphino)cyclobutane. By contrast, the in situ presence of dioxygen during the synthesis of Co2Br4(dppcb)] (1b) produces both [Co2Br4(2,3-trans-dppcbO2)] (2b) and [Co2Br4(1,3-trans-dppcbO2)] (3), where 1,3-trans-dppcbO2 is cis,trans,cis-1,3-bis(diphenylphosphinoyl)-2,4-bis(diphenylphosphino)cyclobutane. The new compounds 2a, 2b and 3 have been obtained as pure, crystalline solids and all three X-ray structure analyses have been performed showing folded cyclobutane rings. Interestingly, the corresponding reaction using [Co2I4(dppcb)] (1c) proceeds chemoselectively. Thus, [Co2I4(dppcbO3)] (4), where dppcbO3 is cis,trans,cis-1,2,3-tris(diphenylphosphinoyl)-4-diphenylphosphinocyclobutane, is formed in excellent yield and also fully characterized by an X-ray structure analysis showing two different conformations of 4. However, [Co2(NO3)4(dppcb)] (1d) shows no dioxygen activation at all. Therefore, in order to reveal the mechanism of this oxidation [Co2I4(DMF)2(dppcb)] (5) has been prepared and its X-ray structure is presented. The synthesis of [Co2I4(PMe2Ph)2(dppcb)] (6) proves that this is a common reaction pathway. Furthermore, because the product distribution of the oxidation strongly depends on the kind of halides present, the whole series Co2X4(dppcbO4)] (X = Cl, 7a; Br, 7b; I, 7c) has been prepared, where dppcbO4 is cis,trans,cis-1,2,3,4-tetrakis(diphenylphosphinoyl)cyclobutane, and all three X-ray structures are given, also showing folded cyclobutane rings. It seems likely that coordination of dppcb to cobalt(II) is essential to form the regio- and chemoselectively oxygenated molecules." @default.
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• W2008231882 date "2009-01-01" @default.
• W2008231882 modified "2023-10-14" @default.
• W2008231882 title "Regio- and chemoselective oxidation of the bis(bidentate) phosphine cis,trans,cis-1,2,3,4-tetrakis(diphenylphosphino)cyclobutane via cobalt(II) mediated dioxygen activation" @default.
• W2008231882 cites W1884192303 @default.
• W2008231882 cites W1965965825 @default.
• W2008231882 cites W1970392630 @default.
• W2008231882 cites W1970522825 @default.
• W2008231882 cites W1979641110 @default.
• W2008231882 cites W1986137243 @default.
• W2008231882 cites W1987681142 @default.
• W2008231882 cites W1987861921 @default.
• W2008231882 cites W1990085223 @default.
• W2008231882 cites W1990578023 @default.
• W2008231882 cites W1994955864 @default.
• W2008231882 cites W1996505011 @default.
• W2008231882 cites W2000055557 @default.
• W2008231882 cites W2003319218 @default.
• W2008231882 cites W2003909595 @default.
• W2008231882 cites W2004026216 @default.
• W2008231882 cites W2007494569 @default.
• W2008231882 cites W2012542448 @default.
• W2008231882 cites W2016003724 @default.
• W2008231882 cites W2016452536 @default.
• W2008231882 cites W2016870260 @default.
• W2008231882 cites W2018684319 @default.
• W2008231882 cites W2019675370 @default.
• W2008231882 cites W2022547257 @default.
• W2008231882 cites W2032018009 @default.
• W2008231882 cites W2032793499 @default.
• W2008231882 cites W2036208610 @default.
• W2008231882 cites W2036358090 @default.
• W2008231882 cites W2038927694 @default.
• W2008231882 cites W2039629706 @default.
• W2008231882 cites W2042074540 @default.
• W2008231882 cites W2045942454 @default.
• W2008231882 cites W2047736321 @default.
• W2008231882 cites W2052060293 @default.
• W2008231882 cites W2052075190 @default.
• W2008231882 cites W2053062710 @default.
• W2008231882 cites W2059401704 @default.
• W2008231882 cites W2061130183 @default.
• W2008231882 cites W2063579554 @default.
• W2008231882 cites W2068953138 @default.
• W2008231882 cites W2069818098 @default.
• W2008231882 cites W2079734146 @default.
• W2008231882 cites W2091333256 @default.
• W2008231882 cites W2092299673 @default.
• W2008231882 cites W2113908492 @default.
• W2008231882 cites W2119796352 @default.
• W2008231882 cites W2120857215 @default.
• W2008231882 cites W2126716097 @default.
• W2008231882 cites W2129856806 @default.
• W2008231882 cites W2132320121 @default.
• W2008231882 cites W2133459261 @default.
• W2008231882 cites W2140965357 @default.
• W2008231882 cites W2144874305 @default.
• W2008231882 cites W2148066840 @default.
• W2008231882 cites W2164257432 @default.
• W2008231882 cites W2165600904 @default.
• W2008231882 cites W2324197409 @default.
• W2008231882 cites W2952538225 @default.
• W2008231882 cites W2952644765 @default.
• W2008231882 cites W3004764433 @default.
• W2008231882 cites W3022457912 @default.
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• W2008231882 doi "https://doi.org/10.1039/b813720j" @default.
• W2008231882 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/19462660" @default.
• W2008231882 hasPublicationYear "2009" @default.
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